Originally Posted by
grizz1
This may be a design feature for longevity, but the rod and crank pin take such a hammering during run in that any positives in having an engine this tight are surely negated.
A rhetorical question I asked in a different thread: "I wonder if the strain on the conrod is higher during the first couple runs, when the pinch is still tight but the engine barely gets above idle, or when the engine is revving at tens of thousands of RPMs after break-in?"
If your engine has a weak conrod, surely it's better to find out before you've gone through the trouble to break-in the engine properly.